his weird artifact bug was introduced sometime around the 4.5 update I believe, it was not there at launch. I have no issue with any other games or any stability problems. I have seen other posts with similar visual bugs for AMD GPUs on Reddit. I tried to report it on Focus entertainment forums but I am unable to make a thread for whatever reason.
There is a poster that has a similar issue: https://community.focus-entmt.com/focus-entertainment/space-marine-2/bugs/4345-artifacting-graphic-b...
For me this issue shows up in the launch menu and armour customisation menu for a split second.
CPU: Ryzen 9800X3D
GPU: PowerColor Red Devil 7900XTX OC LE
PSU: Seasonic Prime TX1000
Motherboard: ASRock Nova Wi-FI X870-E
RAM: G.Skill 6000MT/S 64GB